Across
- 3. Everything that exists, including planets, stars and galaxies.
- 4. The hottest planet.
- 8. Someone trained as a spacecraft crew member.
- 10. Most recent dwarf planet
Down
- 1. The galaxy where Earth and the Sun are located.
- 2. What star is the center of our universe?
- 5. How many planets are in our Solar System?
- 6. A huge ball of burning gas held together by gravity.
- 7. The first men on the moon were carried by which space craft?
- 9. A small solar system body that orbits the sun.